Method and system for injecting cutting fluid during milling under different working conditions

Abstract

The disclosure provides a method and system for injecting cutting fluid during milling under different working conditions. By analyzing influence of an airflow field in a milling area under different working conditions on injection of cutting fluid, an influence rule of a helical angle and a rotation speed of a cutter on the flow field is quantitatively analyzed, an optimal target distance of a nozzle, an angle between the nozzle and a milling cutter feeding direction and an angle between the nozzle and the surface of a workpiece are comprehensively determined, the nozzle is set according to a determined setting manner, and lubricating oil is sprayed to the milling area by utilizing the nozzle.

We claim: 
     
         1 . A method for injecting cutting fluid during milling different working conditions, comprising:
 analyzing an airflow field in a milling area under different working conditions on injection of cutting fluid, analyzing a rule of a helical angle and a rotation speed of a milling cutter on the airflow field, determining an optimal target distance of a nozzle, an angle between the nozzle and the milling cutter feeding direction and an angle between the nozzle and a surface of a workpiece, setting the nozzle according to a determined setting manner, and spraying lubricating oil to the milling area by utilizing the nozzle;   wherein an optimal nozzle position varies with change in a helical angle and a rotation speed of a milling cutter; an angle between the nozzle and a milling cutter feeding direction is related to the helical angle of the milling cutter; the angle between the nozzle and the milling cutter feeding direction is the same as the helical angle; a target distance of the nozzle is related to the rotation speed of the milling cutter, and a diameter of the milling cutter does not affect a position of the nozzle.   
     
     
         2 . The method according to  claim 1 , wherein when a jet flow direction of the nozzle is tangent to a flow line of the airflow field, the cutting fluid is injected along a direction of the airflow, and an angle of the jet flow of the nozzle is an optimal jet flow angle. 
     
     
         3 . The method according to  claim 1 , wherein an optimal target distance of the nozzle is within an air barrier. 
     
     
         4 . The method according to  claim 3 , wherein when the rotation speed of the milling cutter is 600 r/min or 1200 r/min, a maximal value of the target distance is within 30 mm; when the rotation speed of the milling cutter is 1800r/min or 2400 r/min, the maximal value of the target distance is within 20 mm.